Floor cleaning device



FIG. 1 is a top, front and right side perspective view of a floor cleaning device showing my new design;

FIG. 2 is a top, front and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a top plan view thereof.

The broken line showing of various elements in the drawings is for the purpose of illustrating portions of hardware and mechanical structure and forms no part of the claimed design. 

The ornamental design for a floor cleaning device, as shown and described. 